Hika Rakuyo.
Cracking the shell without harming its interior.
The trauma spreads over the surface, radiating over every inch of skin.
“Her tattoos,” said Togame – observing Kyoken Maniwa, who had fallen on her back. “They’re disappearing…”
Kyoken’s hallmark tattoos, which she had transferred onto Konayuki’s body from the one she had presently chopped to bits, faded away… and soon were indiscernible.
Disappearing.
Kyoken Maniwa, said to be among the founding ninjas of Maniwa Village, a persistent presence who had usurped thousands of bodies and roamed the world for centuries –
It was she who disappeared.
Leaving behind the body of Konayuki Itezora.
“Shichika… What is this?”
“Hmm. I guess by hitting only her tattoos, I took down Kyoken without killing Konayuki.”

Katanagatari Omnibus 2, Page 281